ADP7142ACPZN5.0-R7

Overview

The ADP7142ACPZN5.0-R7 is a CMOS low dropout linear regulator manufactured by Analog Devices Inc., operating from an input voltage range of 2.7 V to 40 V with a maximum output current of 200 mA. It provides a fixed 5.0 V output with an initial accuracy of ±0.8% and maintains stability using a small 2.2 µF ceramic output capacitor. The device features ultralow noise of 11 µV rms, high power supply rejection ratios of 88 dB at 10 kHz, and a typical quiescent current of 50 µA. Packaged in a compact 6-lead LFCSP (2 mm × 2 mm), it includes precision enable control, programmable soft start, and thermal overload protection.

Feature Summary

• Ultralow output noise of 11 µV rms independent of the fixed output voltage for options up to 5 V
• High power supply rejection ratio reaching 88 dB at 10 kHz under standard test conditions
• Precision enable pin featuring user-programmable thresholds and hysteresis for reliable switching control
• Capable of driving up to 200 mA while maintaining stability with minimal 2.2 µF ceramic output capacitance

Applications

• Regulation for noise-sensitive analog and mixed-signal circuits
• Powering ADC, DAC, and precision amplifier stages
• VCO VTUNE control power supplies
• Automotive electronics requiring AEC-Q100 qualification

Procurement Notes

Verify the specific package type and suffix against the manufacturer's official ordering guide before procurement. Confirm that the component meets the required temperature range and electrical specifications for the intended application environment. Ensure compatibility with design tools such as ADIsimPower or LTspice for simulation validation prior to implementation.

Selection Notes

Select this regulator when high input voltages up to 40 V must be stepped down to low-noise rails for sensitive analog loads. The fixed 5.0 V option eliminates external feedback resistors, simplifying the design while ensuring tight initial accuracy. Consider the LFCSP package for applications demanding a compact footprint and efficient thermal dissipation without sacrificing performance.

Part Context

This component belongs to the ADP7142 family of high-voltage, low-noise LDO regulators designed for portable and industrial equipment. The series supports various fixed output voltages and adjustable configurations, offering flexibility for diverse power management needs. Its architecture prioritizes transient response and PSRR, making it suitable for systems where signal integrity is critical.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the same product family. Verify that any substitute matches the input voltage range, output current capability, and noise specifications to ensure circuit functionality remains unaffected.